Okay, I'm not a total idiot ;-)...I'm well aware that square footage is length times width, okie dokie. However, this is where it gets sticky... I'm helping my parents set-up an entry level HD home theater in their basement. The attached diagram better illustrates the floorplan than any written description could. I should note that it is very close to scale, with each block representing 1 square foot. If you'll note, there is a 10 foot long rectangle drawn approx right center of the diagram. This represents the couch that will be used for seating in front of the television. The wall in front of it [EDIT: in reference to the 10 foot wall to the far right of the diagram; to the right of the couch rectangle] is where the TV will be. If you can imagine the back [EDIT: left] part of the couch forming the boundary of the "entertainment area", then one could see that part of the basement occupies 100 square feet. My question is this: the speakers I am looking at buying are rated for approximatly 400 square feet. Is that in referance to the square footage of the area that is devoted to entertainment, or to the entire open-air volume of the room itself? Using the same diagram, I've determined that the entire basement is +/- 476 square feet, which is a notable bit over the recommended square footage for the speakers. However, I should note that the cielings are 80" tall, which is a bit over 6.6 feet. Perhaps when the manufacturer said 400 square feet, they were assuming to 8' ceilings? I think I'll be alright with these speakers in the arrangement I've proposed, but I want to get a few opinions first. As an FYI, the speakers Im looking at are a 5.1 system by Athena (Micra 6). In terms of placement, the two fronts will obviously flank the TV, with the center channel either above or below it. The two satallites (can never spell that word) will go on either side of the couch, on stands.